用户口令检查_PHP-php教程-PHP中文网

首页

后端开发

php教程

用户口令检查_PHP

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jun 01, 2016 pm 12:31 PM

ccountifreturn口令检查用户

<font color="#000000">
<font color="#0000BB"></font><font color="#007700"> <br></font><font color="#FF8000">/* <br>* etc.passwd.inc v1.0 <br>* <br>* Syntax: <br>* verifypasswd(string USERNAME, string PASSWORD) <br>* <br>* The function will return one of three values: <br>* -2 if there was a file reading error <br>* -1 if the password is incorrect <br>* 0 if the username doesn't exist <br>* 1 if the password is correct <br>* <br>* Written by WarMage ( michael@irc.net ) <br>* <br>*/ <br><br></font><font color="#007700">function </font><font color="#0000BB">verifypasswd </font><font color="#007700">(</font><font color="#0000BB">＄USERNAME</font><font color="#007700">, </font><font color="#0000BB">＄PASSWORD</font><font color="#007700">) { <br><br></font><font color="#0000BB">＄fd </font><font color="#007700">= </font><font color="#0000BB">fopen</font><font color="#007700">( </font><font color="#DD0000">"/etc/passwd"</font><font color="#007700">, </font><font color="#DD0000">"r"</font><font color="#007700">); <br></font><font color="#0000BB">＄contents </font><font color="#007700">= </font><font color="#0000BB">fread</font><font color="#007700">(</font><font color="#0000BB">＄fd</font><font color="#007700">, </font><font color="#0000BB">filesize</font><font color="#007700">( </font><font color="#DD0000">"/etc/passwd"</font><font color="#007700">)); <br></font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">＄fd</font><font color="#007700">); <br>if (!</font><font color="#0000BB">＄contents</font><font color="#007700">) return -</font><font color="#0000BB">2</font><font color="#007700">; <br><br><br><br></font><font color="#0000BB">＄lines </font><font color="#007700">= </font><font color="#0000BB">split</font><font color="#007700">( </font><font color="#DD0000">"\n"</font><font color="#007700">, </font><font color="#0000BB">＄contents</font><font color="#007700">); <br></font><font color="#0000BB">＄passwd </font><font color="#007700">= array(); <br><br>for(</font><font color="#0000BB">＄count</font><font color="#007700">=</font><font color="#0000BB">0</font><font color="#007700">;</font><font color="#0000BB">＄count</font><font color="#007700"><font color="#0000BB">count</font><font color="#007700">(</font><font color="#0000BB">＄lines</font><font color="#007700">);</font><font color="#0000BB">＄count </font><font color="#007700">) { <br>list (</font><font color="#0000BB">＄user</font><font color="#007700">,</font><font color="#0000BB">＄pass</font><font color="#007700">) = </font><font color="#0000BB">split</font><font color="#007700">( </font><font color="#DD0000">":"</font><font color="#007700">,</font><font color="#0000BB">＄lines</font><font color="#007700">[</font><font color="#0000BB">＄count</font><font color="#007700">]); <br>if (</font><font color="#0000BB">＄user </font><font color="#007700">== </font><font color="#0000BB">＄USERNAME</font><font color="#007700">) { <br>break; <br>} <br>} <br><br>if (!</font><font color="#0000BB">＄user</font><font color="#007700">) return </font><font color="#0000BB">0</font><font color="#007700">; <br><br></font><font color="#0000BB">＄cryptedpass </font><font color="#007700">= </font><font color="#0000BB">＄pass</font><font color="#007700">; <br></font><font color="#0000BB">＄salt </font><font color="#007700">= </font><font color="#0000BB">substr</font><font color="#007700">(</font><font color="#0000BB">＄cryptedpass</font><font color="#007700">,</font><font color="#0000BB">0</font><font color="#007700">,</font><font color="#0000BB">2</font><font color="#007700">); <br></font><font color="#0000BB">＄Pass </font><font color="#007700">= </font><font color="#0000BB">crypt</font><font color="#007700">(</font><font color="#0000BB">＄PASSWORD</font><font color="#007700">,</font><font color="#0000BB">＄salt</font><font color="#007700">); <br><br>if (</font><font color="#0000BB">＄Pass </font><font color="#007700">== </font><font color="#0000BB">＄cryptedpass</font><font color="#007700">) { <br>return </font><font color="#0000BB">1</font><font color="#007700">; <br>} else { <br>return -</font><font color="#0000BB">1</font><font color="#007700">; <br>} <br>} <br></font><font color="#0000BB">?></font></font>
</font>

声明

本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系admin@php.cn

PHP依赖注入容器：快速启动May 13, 2025 am 12:11 AM

aphpdepentioncontiveContainerIsatoolThatManagesClassDeptions，增强codemodocultion，可验证性和Maintainability.itactsasaceCentralHubForeatingingIndections，因此reducingTightCightTightCoupOulplingIndeSingantInting。

PHP中的依赖注入与服务定位器May 13, 2025 am 12:10 AM

选择DependencyInjection(DI)用于大型应用，ServiceLocator适合小型项目或原型。1)DI通过构造函数注入依赖，提高代码的测试性和模块化。2)ServiceLocator通过中心注册获取服务，方便但可能导致代码耦合度增加。

PHP性能优化策略。May 13, 2025 am 12:06 AM

phpapplicationscanbeoptimizedForsPeedAndeffificeby：1）启用cacheInphp.ini，2）使用preparedStatatementSwithPdoforDatabasequesies，3）3）替换loopswitharray_filtaray_filteraray_maparray_mapfordataprocrocessing，4）conformentnginxasaseproxy，5）

PHP电子邮件验证：确保正确发送电子邮件May 13, 2025 am 12:06 AM

phpemailvalidation invoLvesthreesteps：1）格式化进行regulareXpressecthemailFormat; 2）dnsvalidationtoshethedomainhasavalidmxrecord; 3）

如何使PHP应用程序更快May 12, 2025 am 12:12 AM

tomakephpapplicationsfaster，关注台词：1）useopcodeCachingLikeLikeLikeLikeLikePachetoStorePreciledScompiledScriptbyTecode.2）MinimimiedAtabaseSqueriSegrieSqueriSegeriSybysequeryCachingandeffeftExting.3）Leveragephp7 leveragephp7 leveragephp7 leveragephpphp7功能forbettercodeefficy.4）

PHP性能优化清单：立即提高速度May 12, 2025 am 12:07 AM

到ImprovephPapplicationspeed，关注台词：1）启用opcodeCachingwithapCutoredUcescriptexecutiontime.2）实现databasequerycachingusingpdotominiminimizedatabasehits.3）usehttp/2tomultiplexrequlexrequestsandredececonnection.4 limitsclection.4.4

PHP依赖注入：提高代码可检验性May 12, 2025 am 12:03 AM

依赖注入（DI）通过显式传递依赖关系，显着提升了PHP代码的可测试性。 1）DI解耦类与具体实现，使测试和维护更灵活。 2）三种类型中，构造函数注入明确表达依赖，保持状态一致。 3）使用DI容器管理复杂依赖，提升代码质量和开发效率。

PHP性能优化：数据库查询优化May 12, 2025 am 12:02 AM

databasequeryOptimizationinphpinvolVolVOLVESEVERSEVERSTRATEMIESOENHANCEPERANCE.1）SELECTONLYNLYNESSERSAYCOLUMNSTORMONTOUMTOUNSOUDSATATATATATATATATATATRANSFER.3）

See all articles